منابع مشابه
Nuclear Reaction Rates in a Plasma
The problem of determining the effects of the surrounding plasma on nuclear reaction rates in stars is formulated ab initio, using the techniques of quantum statistical mechanics. Subject to the condition that the nuclear reactions ensue only at very close approach of the fusing ions and the condition that the reaction be slow, the authors derive a result that expresses the complete effects of ...
متن کاملAstrophysical Reaction Rates as a Challenge for Nuclear Reaction Theory
The relevant energy ranges for stellar nuclear reactions are introduced. Low-energy compound and direct reactions are discussed. Stellar modifications of the cross sections are presented. Implications for experiments are outlined.
متن کاملPrediction of nuclear reaction rates for astrophysics
The investigation of explosive nuclear burning in astrophysical environments is a challenge for both theoretical and experimental nuclear physicists. Highly unstable nuclei are produced in such processes which again can be targets for subsequent reactions. The majority of reactions can be described in the framework of the statistical model (compound nucleus mechanism, Hauser–Feshbach approach),...
متن کاملOn the enhancement of nuclear reaction rates in high-temperature plasma
We argue that the Maxwellian approximation can essentially underestimate the rates of some nuclear reactions in hot plasma under conditions very close to thermal equilibrium. This phenomenon is demonstrated explicitly on the example of reactions in self-sustained DT fusion plasma with admixture of light elements X = Li, Be, C. A kinetic analysis shows that the reactivity enhancement results fro...
متن کاملNuclear Reaction Rates and Carbon Star Formation
We have studied how the third dredge-up and the carbon star formation in low-mass Asymptotic Giant Branch stars depends on certain key nuclear reaction rates. We find from a set of complete stellar evolution calculations of a 2M⊙ model with Z = 0.01 including mass loss, that varying either the N(p, γ)O or the triple-α reaction rate within their uncertainties as given in the NACRE compilation re...
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ژورنال
عنوان ژورنال: Reviews of Modern Physics
سال: 1997
ISSN: 0034-6861,1539-0756
DOI: 10.1103/revmodphys.69.411